Apparatus and method for writing optical information

Details Apparatus and method for writing optical information Apparatus and method for writing optical information

2011-04-26

2011-04-26

Edun, Muhammad N (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal processing for controlling recording light...

C369S059100, C369S053340, C369S047500, C369S059190

Reexamination Certificate

active

07933183

ABSTRACT:
An optical disk writing apparatus enhances writing accuracy by writing first data (e.g., test data) that encodes a first writing strategy within first patterns on an optical disk, in response to a first writing signal. A reproducing signal is generated in response to reading the first data from the optical disk. Variations between leading and trailing edges of the first writing signal and leading and trailing edges of the reproducing signal are detected. A correction value is determined using a jitter evaluation function to evaluate the detected variations. From these operations, a second writing strategy is determined using the correction value to modify the first writing strategy. Thereafter, second data (e.g., actual data) is written, which encodes the second writing strategy within second patterns on the optical disk.

REFERENCES:
patent: 6678220 (2004-01-01), Saga
patent: 7095696 (2006-08-01), Nakajima et al.
patent: 7248552 (2007-07-01), Furumiya et al.
patent: 2007-287229 (2007-11-01), None

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